Ventilator.



J. R. ELLIOTT.

, VENTILATOR.

APPLICATION FILED APR. 11. 1912.

Ligfi5 Patented Apr. 6, 1915.

'tllator is applied canon;

JAMES nnntxoar, or n nnvnn, cotonano.

vnmaron.

. 11,134,259. p fl 0f Letters a n Patented Apr. 6, 1M5. g mfiaa rn 11, 191a. Serial No. 989,845. To all whom it'ma'y 00nc'em.', cavityl2'for the reception of the operating Be it known that I, Jnmns R. Enmounga citizen of the United States of America, and a resident of Denver, in the county of enver, State of Colorado, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

his invention relates to the controllable of yentilators orregisters employed for ventllatlng and heatlng purposes, and has and efficient structural formation and combination of parts, adapted to afford a minimum amount of obstruction when used as a floor ventilator or re star and which in addition provides for res and ample delivery of air with a ready and convenient control of such deliver all as will hereinafter more fully appear.

11 the accompanying drawings: Figure 1,

is a vertical section on line 'wm, Fig. 2, of a ventilator embodying the present improvements. Fig. 2, is a horizontal section of the same on line :c r' Fig. 1.

Similar reference numerals indicate like parts in both views.

eferring to an annular ring an outwardly extending marginal top flange 2 adapting it to fit a circular for its reception in the floor portion of a building or structure.

3 are orificed lugs on the flange 2 for the passage of attaching screws, when the vento a wood floor or the like.

4 are orificed lugs on the inner surface of the ring 1 for the passage of anchor bolts 5 when the ventilator is applied to a concrete floor or the like.

6 are guide ears on the inner surface of ring 1 for guiding engagement with the guide stems of the hereinafter described adjustable cover member.

is a screw-threaded tegrally connected to the arms 8, as shown.

9 isa depending yoke formed integral with or other lik central hub inring 1 by radial the arms8 aforesaid, and provided at bottom rectilinear movement of said cover member in its adjustments.

is a vertically arranged screw-thread arbor journaled centrally in the bottom Wall of the cavity 12 of the cover member 11 by a reduced neck as shown, and provided at its upper 'end with a winged operating nut 15 disposed within said cavity as shown.

6 is a guide stem depending from the lower end of the arbor 14, and having guiding engagement in the guide hub 10 of the yoke 9, aforesaid.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. register, comprising a frame, a closure, a screw journaled at its opposite extremities in parts of said register closure with said frame, the register havinga threaded opening intermediate the jourfor moving the to and from the said frame. register, comprising a frame adapted to surround the heat or ventilating opening, a closure, a screw connecting said closure with said frame, the register having parts in which the opposite extremities of said screw are journaled, the register having a threaded opening intermediate the journaled extremities of said screw, the screw passing through the said threaded opening and cooperating with the threads of the latter when the screw is turned to closure to and from the said frame, and guide rods connecting said closure with the frame for preventing turning of the closure.

register, comprising a frame, a closure, a screw connection between said frame and th one extremity of the said the frame aving a centrally located member in which extension of said screw is closure journeled, end-g id l f m 61 the said guide rods preventin cm the said closure;

4. A register, comprising e fr ame adepting journaled in seid centrallylocated nijem Miami guide rods forpreventing ti rmng of the closure.

Signed at Denver, of April 1912.

I JAMES R. ELLIOTT. witrfi3r Amok. C. onorsou.

Colorado, 2nd dey 

